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1. [Amps] lk550 plate efficency (score: 1): Author: Dxhogg@aol.com; Date: Thu, 5 Jan 2006 19:49:54 EST; I have a lk550 that I would like to see a little more plate efficiency on 160m at the bottom of the plate choke is a 1000pf bypass if I increase that to 8000pf will I see more output on 160m without; /archives//html/Amps/2006-01/msg00195.html (6,188 bytes)
2. Re: [Amps] lk550 plate efficency (score: 1): Author: "Phil Clements" <philc@texascellnet.com>; Date: Thu, 5 Jan 2006 22:27:38 -0600; The bypass capacitor at the base of the plate choke is to keep RF out of the power supply and your house wiring. RF is very detrimental to electrolytic filter capacitors. 1000 pf is not enough to do; /archives//html/Amps/2006-01/msg00198.html (6,999 bytes)
3. Re: [Amps] lk550 plate efficency (score: 1): Author: W2RU - Bud Hippisley <W2RU@frontiernet.net>; Date: Fri, 06 Jan 2006 12:21:14 +0000; I have LK-550 S/N 001. Given its serial number, I'd hesitate to call my amplifier "stock" <G>, and it may be nothing like yours, but I found it necessary to add some capacitance in the output pi-netw; /archives//html/Amps/2006-01/msg00207.html (7,515 bytes)

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